WR450 F or CRF450 X

[takitimu]

changing gears slows you down, so does wild wheelspin, so do big fat wheelies. 4Ts are faster because the power is the similar except it's more useable. to say that a 4stroke tires you out and a 2t doesn't is rediculous. It's rider preference but to generalise..... 4strokes are faster. Put Philliparts on a 4t and a 2t around any MX track and guess which one he'll be faster on.
Mine is fast as fuck to start when it's hot. i press the button and it starts maybe 3 seconds at a guess. This is a stupid argument and has been done before. Also to say that only a few people in the world can "use the power" of a 4 stroke is dumb too..... almost every pro MX rider rides a 4T. It's the way of the world now. They all started making 4ts because they're faster ha ha haaaaaaaaaaaaaaa. Big 'ol mouth

Ok, I'll bite, 4T != 450, have a look at AMA MX times, last time I went to one, only one Bubba was faster than the 250's, the last GNCC in the states a 250 came 4th from memory & the last WEC champion was a 300 KTM 2/.

Didn't they made 4t's because of California emission legislation & the fact that massive market effectively banned 2t's.

I just wish they made a KX350F with a Yamaha style SE option, that option gave you steel valves, Li-Ion battery & electric start in a bike weighing 95kg dry, ( the new TC250 Husky is 92kg ), surely that's not asking to much .

[warewolf]

to say that a 4stroke tires you out and a 2t doesn't is rediculous.

Not entirely, as 2Ts are heaps lighter. Not just in overall mass, but in the engine internals' rotational inertia.

The extra grunt of a big 4T is nice but it takes a lot more effort to throw it around vs a 2T.